Hey Expressodc,
Yea, actually I applied to HKS and HBS dual degree program. And my main application position was tailor for the MPP/MBA program. I also applied to other B-schools that had an arrangement with HKS for MPP/MBA program.
To answer other's questions, no the email I received did not actually ask whether I would like to be considered for MPA2. Rather, the Ad Com told me he was switching my status after realizing that I clicked the MPA2 option also. I asked him whether I can be considered for MPP (put me backb to my original choice) and he said he switched it back.
Way I understand it is that MPP is more structured than MPA2. In addition, MPP requires a thesis, but MPA2 does not. However, I have a very relatively specific goal post graduation so MBA/MPP is my choice. Just hope I get the interview invite from HBS soon.
Best wishes. I recently received a request to submit additional information from Tuck as well. I guess I will know where I stand with that school in the next few days.